A sampling limit for the empirical mode decomposition

N. Stevenson, M. Mesbah, B. Boashash

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

32 Citations (Scopus)

Abstract

The aim of this paper is to investigate the effect of sampling on the empirical mode decomposition (EMD). To this end, an experiment utilising linear frequency modulated (LFM) signals was used to simulate different sampling rates. This experiment showed that as the frequency content of the signal (f c) approached the sampling frequency (fs) the EMD performed poorly due to poor amplitude resolution. This led to a definition of a sampling limit that was 5 times the Nyqvist rate (fs /10) to improve the performance of the EMD. Comparative simulation with this sampling limit was conducted on a simulated and a real world signal. The results exhibited significant improvement in intrinsic mode function (IMF) orthogonality, the distribution of IMF energy and IMF coherence.

Original languageEnglish
Title of host publicationProceedings - 8th International Symposium on Signal Processing and its Applications, ISSPA 2005
Pages647-650
Number of pages4
Volume2
DOIs
Publication statusPublished - 2005
Event8th International Symposium on Signal Processing and its Applications, ISSPA 2005 - Sydney, Australia
Duration: Aug 28 2005 → Aug 31 2005

Other

Other8th International Symposium on Signal Processing and its Applications, ISSPA 2005
CountryAustralia
CitySydney
Period8/28/05 → 8/31/05

ASJC Scopus subject areas

  • Engineering(all)

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    Stevenson, N., Mesbah, M., & Boashash, B. (2005). A sampling limit for the empirical mode decomposition. In Proceedings - 8th International Symposium on Signal Processing and its Applications, ISSPA 2005 (Vol. 2, pp. 647-650). [1581021] https://doi.org/10.1109/ISSPA.2005.1581021